Bromodiethylacetylurethanes.



' small white leaflets meltin UNITED sTATEs PATENT OFFICE.

JU'RGEN OALLSEN, OF ELBERFELD, GERMANY, ASSIGNOR T0 SYNTHETIC PATENTS 00., INC., 0]? NEW YORK, N; Y., A CORPORATION OF NEW YORK.

BROMODIETHYLACETYLURETHANES.

No Drawing.

To all whom it may concern:

Be it known that I, Jr'iRoEN CALLSEN, doctor of hilosophy, chemist, citizen of the German E mpire, residing at Elberfeld, Germany, have invented new and useful Improvements in Bromodiethylacetylurethanes, 4

of which the following is'a specification.

The present invention concerns the production of the hitherto unknown bromodiethylacetylurethanes of N-acylized aminophenols havin most probably the followlng general formu a:

nervines and sedatives, an average dose bein from i: to 5 gram. Upon being heated ov r their melting point HBr is split oil". A process for their production consists in re acting upon the acidylized aminophenol with bromodiethylacetylisocyanate In order to illustrate my new process more fully the following example is given, the parts being. by weight: 453 parts of paraacetylaminophenol are suspended in 1500 parts of pure acetone, 660 parts of bromodiethylacetylisocyanate are added and the mixture is shaken until solution results. After the latter has been allowed to stand during some hours the precipitate is filtered off, washed with ether and recrystallized from alcohol. It crystallizes in the shape of at 144 C. The new product has most pro ably the following formula:

O-NHC0.0.C n -Nn.co.crn. izc a 4 It is almost tasteless, easily soluble in Specification of Letters Patent.

Patented Feb. 12, 1918 Application filed January 31, 1917. Serial No. 145,781.

alcohol and acetone, scarcely soluble in benzene, ether and water. Other acidylized aminophenols can be used. The bromodiethylacetylurethane of the oxyphenylurea melts at 187 C. It has most probably the formula:

GIN-004"" 1L H-OO. sH4NH-GO-NH For the purpose of this patent it is to be assumed that any products which may be obtained by treating the above mentioned N-acidylized aminophenols according to methods suitable for the manufacture of their bromodiethylacetylurethanes is within the class desi ated in this patent as such urethanes of acidylized aminophenols, such being in accordance with my present understanding as a chemist and such being the intended generic scope of this patent.

I claim 1. The herein described bromodiethylacetylurethanes, having most probably the folowing general formula:

in which A represents an arylene radical,

bein generally whitish compounds which can be crystallized from alcohol; to splitting ofl' hydrogen bromid when heated beyond their melting point; and bein valuable nervines and sedatives, substantially as described.

2. The herein described bromodiethylacetylurethanes, having most probably the following formula:

onn-coocn NHaol being generally whitish compounds which can be crystallized from alcohol; splitting ofi' hydrogen bromid when heated beyond their melting point; and being valuable nervines and sedatives, substantially as described.

3. The herein described bromodiethylacetylurethane of paraacetylaminophenol havand Water; and'bein a, valuable nervine and 1 0 ing most probably the following formula sedative, substantial y as described.

' c, i In testimony whereof I hay hereunto set i" 3 "q m hand in the presence of two subscribing 1- wltnesses. crystallizing from alcohol in the shape of 9 JURGEN CALLSEN. [14.8.] small white leaflets melting at 144 (3., being Witnesses: almost tasteless, easily soluble in alcohol and HELEN 'NUFER,

acetone, scarcely soluble in benzene, ether FRANCES M.'NUFER. 

